JP3944467B2 - Manufacturing method by press compounding of parking pole for automobile AT - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for manufacturing a plate-shaped material having a complicated shape at a low cost by hot or warm forging press processing , and then using a precision punching technique by press composite processing of a parking pole for an automobile AT. Is.
[0002]
[Prior art]
In the conventional manufacturing method, hot, warm, and cold forgings and casting shapes were produced, and then finished using full cutting.
In a partial portion of the product that it is special require precision, polishing and processing method which has been completed is subjected to buffing processing, that need a lot of man-hours.
[0003]
As another manufacturing method, a fine blanking press machine (hereinafter referred to as an FB press machine) may be used to precisely punch a plate material into a required contour shape.
Processing by the FB press machine uses a special FB press machine to drive special wedges called material presses into the plate material, and by applying strong pressure to the counter to give special stress to the material during punching. And punching with a very small clearance between female dies.
It is a processing method that finishes the processed surface to a level that is relatively clean by these operations (for example, see Patent Document 1).
[0004]
The biggest disadvantage of processing by this FB press machine is that the sag portion is about 20 to 30% of the thickness in proportion to the thickness of the plate material. For this reason, in the product which dislikes the occurrence of sag, the sag portion is removed by cutting.
[0005]
[Patent Document 1]
Japanese Patent No. 2829270 [0006]
[Problems to be solved by the invention]
Hot, warm, cold, forged plate-shaped material or cast plate-shaped material is manufactured, and then the contoured shape part is processed by press working. Since finishing is performed, there are problems that the number of processing steps is large and the production cost is high.
Further, the productivity using the FB press machine is low, and as described above, there is a problem that it is impossible to prevent the occurrence of the sag portion.
The present invention has been proposed in view of the above problems, and an object of the present invention is to enable easy press molding of a highly accurate molded product.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, in the present invention, a die comprising a female die, a counter, and a punch in a manufacturing method by press complex processing of a parking pole for an automobile AT using a press machine for an outer peripheral contour portion of a plate-like material. When press working with a female die, the female die forms a taper portion having a taper surface set between a single-side taper angle of 3 ° to 45 ° and having a smaller diameter from the surface facing the punch to the back. The tip of the part is formed with one molding part and a straight part continuous to the molding part, and the outer diameter is 0.01 mm to 2 mm from the finished dimensions required by hot or warm forging press processing with the female die. .5 millimeter larger formed plate-like material, the molding portion only passes to pressing while sandwiched at its both surfaces between a punch and a counter It is on to the ash to shape a more parking pole automotive AT.
[00 08 ]
[Embodiment]
An embodiment of a method for manufacturing a parking pole for an automobile AT according to the present invention by press combined machining will be described with reference to the drawings.
FIG. 1 is a longitudinal front view of a punching die for processing a parking pole. In the figure, reference numeral 1 denotes a female die, 2 denotes a large-diameter punch, 3 denotes a plate-shaped material (workpiece), and the female die 1 is on the upper side. The large-diameter punch 2 is installed on the lower side.
[0009]
At the center of the positioning plate 4 of the plate-like material 3 is formed with a recess 5 for guiding positioning plate shape by ejector pins 23, which are multiple placed on the upper surface of the positioning plate 4 or the large-diameter punch 2 The material 3 is arranged at a position about 5 mm higher than the upper surface of the large-diameter punch 2.
The ejector pins 23 are also intended to prevent biting burrs and the like generated in the outer peripheral contour portion of the plate-shaped material 3 from biting, and to stably remove the plate-shaped material from the upper surface of the punch.
In the concave portion 5 of the positioning plate 4 of the plate-shaped material 3, grooves for air blow (not shown) are formed at several places around it.
[001 0 ]
At the center of the female die 1, a pressure-adjustable counter 6 is installed so as to be slidable up and down, and constantly receives a constant downward pressure. The lower surface 6a of the counter 6 is the lower surface of the female die 1 (facing the punch). Surface) protrudes 2 mm or more from 1 a, and the lower surface portion 6 a hits the plate-shaped material 3 before the female die 1 and sandwiches the plate-shaped material 3 on the large-diameter punch 2.
The lower part (surface facing the punch) 6a of the counter 6 blows out traces generated during molding of the plate-like material 3 by air blow means (not shown), and the upper surface of the plate-like material 3 is not damaged by the traces. It is like that.
A small-diameter punch 7 for drilling is mounted in the counter 6 so as to be movable up and down, and the lower surface 7 a of the punch 7 is set at a position several millimeters higher than the lower surface 1 a of the female die 1.
[001 1 ]
A flange portion 19 is formed on the upper portion of the small-diameter punch 7, and the flange portion 19 is stored in the punch holder 20 while being pressed downward by a spring 22 or urethane via a push-down pin 24 from above. Has been.
The coefficient of restitution of the spring 22 or urethane is determined in accordance with the material and thickness of the plate-like material 3, the required vertical momentum of the small-diameter punch 7, and the strength of the spring 22 or urethane is adjusted by the two worm screws 21. The
[0012]
As shown in FIG. 3, a molding processing portion 9 having one molding portion 8 and a straight portion 14 continuous with the molding portion 8 is formed in a portion near the lower surface 1 a of the female die 1.
Molding portion 8 and the straight portion 14 of the molding portion 9 is formed to the contour of a desired shape.
Then, the formed shape portion 8 to the lower surface 1a of Mesudaisu 1 is formed on the lower spread tapered entrance 11, the one surface taper angle α are the 20 °. Here, the one-side taper angle α is set between 3 ° and 45 °.
That is because the one-sided taper Angle α is liable to be cracked in the plate-shaped material 3 exceeds less than 3 ° and 45 °.
[0013]
Moreover , the plate-shaped raw material 3 processed with the said metal mold | die is formed as shown in FIG. 2 by hot or warm forging press process .
That is, the plate-shaped material 3 has an outer shape that is 0.01 mm to 2.5 mm larger than the required finished dimension, while the inner dimension of the hole 15 is 0.01 mm to 2.5 mm on one side of the finished dimension. I try to make it smaller .
Here, when the outer dimension is less than 0.01 mm, the corner portion is likely to be chipped. When the outer dimension exceeds 2.5 mm, the surplus becomes excessive and the processing becomes difficult.
This Ru similarly der true for the inner form.
[0014]
Next, a procedure for processing the plate-like material 3 with the mold configured as described above will be described.
First, it puts exactly the plate-shaped material 3 into the recess 5 of the positioning plate 4 on the punch 2 having a large diameter.
When the press starts to descend, the lower surface 6a of the counter 6 first comes into contact with the plate-like material 3, and the plate-like material 3 is pressed with a constant pressure.
Since the plate-shaped material 3 on the large-diameter punch 2 is pressed by the counter 6 from the upper hydraulic pressure body 16 via the counter knockout pin 17, the plate-shaped material 3 cannot move on the large-diameter punch 2 from front to back and left and right. Retained.
When the female die 1 is lowered, an operation for punching and forming the outer peripheral contour portion of the plate-like material 3 from the tapered entrance of the female die is started.
[0015]
When the knife-shaped die 1 descends, the plate-like material 3 on the large-diameter punch 2 passes through the forming portion 8 and passes straight to the straight portion 14 , and the small-diameter punch 7 is positioned several millimeters above the lower surface 6 a of the counter 6. Waiting at.
The small-diameter punch 7 hits the hole 15 of the plate-shaped material 3, and the small-diameter punching process is started.
During processing, the plate-shaped material 3 is advanced until the female die 1 reaches the lowest point while the left and right and front and rear movements are held in a stationary state. At this time, the upper hydraulic pressure body 16 is switched to a stronger pressure than before.
The plate-shaped material 3 moves to the straight portion 14 after passing through the molding portion 8 from the entrance 11.
The outer peripheral contour shape part punched out of the plate-like material 3 is located on the straight part 14 in the die 1 (see FIG. 4).
Next, Ru passed down the plate shaped material 3 is located in the straight portion 14 from FIG Nakagami.
[0016]
By adjusting the pressure applied to the plate-shaped material 3 by the upper hydraulic pressure body 16 , it is possible to prevent the punch from being damaged when drilling 30% of the thickness of the plate-shaped material 3. As a result, 3 mm perforation was possible for the thickness of the plate-like material 3 of 10 mm.
[0017]
As described above, the vertical movement during the processing of the small-diameter punch 7 is delayed after the tip portion 7a of the small-diameter punch 7 reaches the straight portion 14 of the female die 1 with a delay from the processing of the outer peripheral contour portion of the plate-like material 3. Start processing.
Thus, pressure tonnage for drilling is, Drop pressurized tonnage by processing by providing a draft and two hours difference of the outer contour punching and a small-diameter hole 15, the outer peripheral contour shape of the plate-like material 3 Processing and processing of the hole 15 can be performed accurately.
Here, when the small-diameter punch 7 is disengaged from the hole 15 of the plate-shaped material 3, the hole 15 is deformed because it receives pressure from the outer peripheral contour portion when passing through the forming portion 8 and the straight portion 14 of the female die 1. And shrink.
In order to prevent this deformation and reduction, the female die 1 is raised with the small-diameter punch 7 stuck in the hole 15 of the plate-like material 3, and when the plate-like material 3 comes out from the straight portion 14 to the tapered portion 11 below it. Since the small-diameter punch 7 is removed from the hole 15 of the plate-shaped material 3, there is no pressure toward the small-diameter hole 15 from the outer peripheral contour portion of the plate-shaped material 3 at that time. Therefore, the hole diameter can be kept accurate.
[0018]
When the counter 6 starts to rise after passing through the lowest point of the press as described above, the small-diameter punch 7 is maintained in a state of being filled in the hole 15 of the plate-like material 3 for a while, and the taper portion 11 of the female die 1 is moved to the plate. The small-diameter punch 7 is also detached from the small-diameter hole 15 at the time of leaving the shape material 3.
With this operation, the plate-like material 3 can be precisely finished without the holes 15 of the plate-like material 3 being deformed or contracted when the plate-like material 3 passes through the straight cylindrical portion 10 of the female die 1 in the reverse direction.
[0019]
Further, at the outer peripheral portion of the large-diameter punch 2, the positioning die 4 of the plate-like material 3 is pushed down when the female die 1 passes through the lowest point, and at the same time, the ring-shaped punching residue of the outer peripheral contour portion of the plate-like material 3 is pressed. Will occur.
The punched residue is pushed downward from the upper surface of the large-diameter punch 2.
When the lower pressure pin 18 adjusts the timing and raises the positioning plate 4 of the plate-shaped material 3, the punched residue is discharged to the outside of the mold.
At this time, a small amount of debris generated during molding of the plate-shaped material 3 is blown from the upper surface portion of the large-diameter punch 2 by an air blow means (not shown), and the lower surface portion of the plate-shaped material 3 is not damaged by the small amount of debris.
[0020]
The plate-shaped material 3 does not bite into the outer peripheral portion of the upper surface portion of the large-diameter punch 2 by the ejector pins 23, and it is not necessary to separately clean it by an air blow means (not shown). can be carried out of the automatic loading and unloading at a high speed and that do not.
[0021]
【The invention's effect】
As described above, compared to conventional cutting and FB press methods, it can be manufactured with high productivity using an inexpensive general-purpose press, so it can be provided to a wide range of markets by producing inexpensive parking poles. .
A plate-shaped material whose outer shape is 0.01mm to 2.5mm larger than the finished dimensions required by hot or warm forging press processing is manufactured, and instantly performed with one stroke using a general-purpose press. Precision products can be manufactured.
[Brief description of the drawings]
FIG. 1 is a longitudinal front view of a precision press punching die of a parking pole according to the present invention.
FIG. 2 is a perspective view of a plate-shaped material of a parking pole according to the present invention.
FIG. 3 is a longitudinal sectional front view showing the internal structure of the female die of the parking pole of the present invention.
FIG. 4 is an explanatory diagram in the course of processing with a female die of a parking pole according to the present invention.
[Explanation of symbols]
1 ... Mesudaisu 6 ... counter 7 ... small-diameter punch 8 ... molding part 11 ... tapered over part

Claims (1)

In the manufacturing method by press composite processing of the parking pole for automobile AT using a press machine, the outer peripheral contour part of the plate-shaped material is pressed using a die composed of a female die, a counter and a punch. A taper portion having a taper surface set between a single-side taper angle of 3 ° to 45 ° having a smaller diameter from the surface facing the punch toward the back is formed, and the tip of the taper portion is a single molded portion and a molded portion. the straight portion continuous is formed, in the Mesudaisu, hot or 0.01 millimeter outline than finished dimension required by the forging press working of warm 2.5 millimeter larger formed plate-like material , forming a parking pawl automotive aT by the both sides only passes the forming section while held between the punch and the counter-pressing A manufacturing method by press compounding of a parking pole for an automobile AT, characterized by being formed.

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